rapier

from WordNet (r) 3.0 (2006)

rapier
    n 1: a straight sword with a narrow blade and two edges [syn:
         {rapier}, {tuck}]

from The Collaborative International Dictionary of English v.0.48

Rapier \Ra"pi*er\ (r[=a]"p[i^]*[~e]r), n. [F. rapi[`e]re,
   perhaps for raspi[`e]re, and ultimately of German origin,
   akin to E. rasp, v.]
   A straight sword, with a narrow and finely pointed blade,
   used only for thrusting.
   [1913 Webster]

   {Rapier fish} (Zool.), the swordfish. [Obs.] --Grew.
      [1913 Webster]